CiON, a unit formed by two vocalists and three instrumentalists, returns to Billboard Live. With a one-of-a-kind “brass×idol” concept as their signature style, CiON’s performances that blend singing, playing, and dancing have drawn widespread support. They made their major debut with avex in April 2025 and are increasingly active in broader fields. Backed by a powerful band lineup including music supervisor Goushi Nishizaki, they craft an ensemble distinct from their usual stage in the special project【JAZZ SESCiON】, now in its fifth edition, and, in a first-ever tour format, will visit two cities—Yokohama and Osaka. In a club space where the performers’ breath can be felt, enjoy a luxurious musical experience to your heart’s content.